Trial Search Results

An Open-Label Trial of Donepezil in Fragile X Syndrome

Fragile X syndrome is the most common known inherited cause of neurodevelopmental disability. Functional magnetic resonance imaging (fMRI) studies from our laboratory indicate that specific brain regions using the neurochemical, acetylcholine, show significantly reduced activation during learning. Since donepezil is a medication that enhances acetylcholine function in the brain, the purpose of this study is to determine if donepezil has any beneficial effect on behavior or cognition in subjects with fragile X syndrome.

Stanford is currently not accepting patients for this trial.

Lead Sponsor:

Stanford University

Stanford Investigator(s):


  • Drug: donepezil


Phase 1


Inclusion Criteria:1. Confirmed genetic diagnosis of fragile X syndrome

2. Age e 14

3. Verbal IQ e 60 Exclusion Criteria:1. Currently taking any anticholinergic medications,
tricyclic antidepressant medications, or diphenhydramine.

2. Presence of cardiac disease or bradycardia (< 60 beats/minute) at initial evaluation.

Ages Eligible for Study

14 Years - N/A

Genders Eligible for Study


Not currently accepting new patients for this trial

Contact Information

Stanford University
School of Medicine
300 Pasteur Drive
Stanford, CA 94305